And david heston



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I. ROBBINS 8v D. HESTON.

GHROMATIG PRINTING PRESS. No. 246,821. 'Patented Sept. 6.1881.

ATTOKNEY.

UNTTEE STATES PATENT OEEi'cE.;

IRA ROBBINS, OF GAMDEN, NEW JERSEY, AND DAVID HESTON, OF PHILA- DELPHIA, PENNSYLVANIA, ASSIGNORS OF TWO-THIRDS TO DAVID HES- TON AND ONE-THIRD TO IRA ROBBINS.

CHRQMATIC PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 246,821, dated September 6, 1881.

Application tiled July 15, 1880. (No model.)

Yo all whom fit may concern:

Be it known that we, IRA RoBBINs, of the city and county of Camden, State ot' New Jersey, and DAVID HEsTON, ot' the city and county of Philadelphia, State ot Pennsylvania, and

both citizens ofthe United States, have invented a new and useful Improvement in Chromatic PrintingPresses, which improvementy is fully set forth in the following specification 1o and accompanying drawings, in which- Figure l is a side elevation ot' the printingpress embodying our invention. Fig. 2 is an end view thereof'. Fig. 3 is a horizontal section ot' a portion thereot' in line .r fr, Fig. 1. Fig.

i5 4 is an enlarged view of a detached portion thereof.

This invention relates to printing-presses operating by Hat pressure; and it consists, partly, in a platen having at its rear side laterally and 2o rearwardly extending angular arms, in combination with arms attached to said rearward extensions and supporting the bed, all substantially as hereinafter set forth.

It also consists in the comhnatiomwith the bed ot' a printing-press, of an inking roller or rollers and a movable foot or roller support, and in further details of construction hereinafter set forth and claimed.

Referring to the drawings, A A A represent a num ber of bed and platen presses, which are mounted upon a common base-plate, B, and, excepting as far as is necessary7 for purposes of our invention, may be ot' well-known form and construction. The presses are adjustable on the hase-plate, in order to be set nearer to or farther from each other, and the number of them employed is equal to the number of colors to be printed.

G represents the main or driving-shaft,which 4o is mounted on the frame or support of one of the presses, (in the present case the right-hand press A,) and carries at one end a pinion, a, and a wheel, b. The pinion a gears with a larger pinion, d, whose shaft is mounted on the frame ot' the press A, and it will be noticed that the frames of the other presses have each mounted on them pinions and a wheel similar to a d Z1, as will be seen at a d b and a d b".

Each wheel b b b has a wrist-pin, e, to which is suspended freely a boss, D, and through the 5o several bosses is passed a rod or bar, E, to which each boss is secured hy means ot' a setscrew,f, the several bosses occupying the same relative positions one to another on the wheels b b b". y 55 To the end of the har E are secured arms F, whose lower ends are connected to wrist-prins g on wheels G, the shafts G whereof are mounted on the hase-plate and carry on their opposite ends wheels G, which are connected by 6o a bar or rod, H, as shown in Fig. 2 and dotted lilies, Fig. l.

Attached to the wrist-pin ot' each of the wheels d d d is an arm, J, by which the bed K and connected mechanism of each press is raised and lowered, and to the frame or support of each press is pivoted an arm, J f which is connected to the mechanism moving the inking-rollers h over the inking-plate and form, features which are, however, well known. 7o

It will be seen that the several presses are arranged one behind the other in close proximity to' each other. In order to admit ot' the movement of one press close to the rear of the adjacent press, laterally projecting angular 75 arms J are formed with or secured to the rear of the bed ot' each press, and the arms J, to whose upper ends the beds are hinged, are pivoted to said angular arms. This spreads the arms J" in such manner that a space exists he 8o hind each press for the platen L, the arms J J', and hed K of the adjacent press, so that the presses may be operated without interfer-y ing one with another or adjacentmovable parts striking each other. (See Fig. 3.) 8'5 The rear end of each bed has hinged to it a foot, M, which falls by gravity, but opens out to form an extension of the bed when the inking-rollers h reach the lower face ot' said foot, thus providing a proper support for the rollers 9s at their lowest points. As soon as the rollers return the foot is no longer controlled and falls to an upright position, (see Fig. 4,) where by the rollers ot' the adjacent press are provided with sufcient space for movements, and striking of the rear ofthe bed is prevented Suspended from a beam, N, attached to the ceiling or otherwise supported, are springs l?, the lower end ot' each of which is connected to a proper part of one of the beds and expanded when the bed descends and permitted to contract when the bed ascends. By this provision a portion of the weight of the bed and connected parts is removed from the operating-arms and crank-shaft, and thus the press is balanced and made to run with ease.

In order to adjust the several presses rela tively to each other and to the work to be accomplished we provide screws R, each ot' which is swiveled to a stationary part of the base B and tapped into a proper part ot' the frame of the respective press. The screwsfof the bosses D and rod or bar E are loosened, and the screws It properly rotated until the several presses are set or adjusted. The screws f are then tightened, and the several presses are ready to operate in unison as one press.

Power is applied to the shaft C in any desirable manner, and thereby communicated to the pinion a. Simultaneously therewith the boss D, which is suspended freely from the wrist-pin of the wheel b, is rotated and carries with it the rod or bar E, and motion is transmitted to the other bosses, and consequently to the wheels b" b". The upper pinions also immediately rotate by the action of the pinions ct a a, and thus the several presses are set in motion, the forms are inked, and the paper or material to be printed, resting on the platens ot' the presses and receiving an intermittent motion, has the did'erent colors successively printed upon it.

It will be seen that the connection of the wheels b b b" by the rod or bar E and bosses D causes said wheels to rotate in harmony and uniformity, their motion being furthermore steadied by the arms F, wheels G G, and connecting-rod H, and thus the work of the presses is regular, systematical, and steady, and admirable results are obtained.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a printing-machine,the platen having at its rear side laterally and rearwardly extending angular arms, in combination with arms attached to said rearward extensions and supporting;` the bed, all substantially as and for the purpose set forth.

2. The movable foot or roller support M, in combination with the bed of a printing-press and an inking roller or rollers, substantially as set forth.

3. The wheels having wrist-pins e, in combination with tbe bar operating the same, the adjustable presses driven by said bar, and the adjustable bosses, substantially as set forth.

4. ln combination with a series of presses, the wheels b b b, the crank-bar E, the arms F, wheels G G", and connecting-rod H, substantially as and for the purpose set forth.

IRA ROBBINS. DAVID RESTON.

Witnesses:

J ons A. WIEDERSHEIM, W. F. KIRCHER. 

